Hi! First off, I want to tell you that this is not one of my best creations, but I like it anyway. If you have any question about the mask, it came from this: http://brickset.com/detail/?Set=3541-1

Anyway, on to the pics!

There was a Ta-matoran mask maker in Metru Nui named Tohuna.

One day, he made a very strange Kanohi by combining lots of miscellaneous Kanoka disks. To test it for flaws, he put it on. Without knowing, he had just created the legendary Kanohi Mozzarella, the Mask of Cheese.

When Tohuna put it on, energy coursed through his body. Apparently, this mask had a mind of it's own!

When it was finished, Tohuna was a Toa of Fire and Cheese! The mask had also given him other powers, such as invisibility and flight.

Tohuna protected Metru Nui from dangers such as Technic robots.

But, one day, he fought a villain known as Baron Inika. The battle went on for hours.

Tohuna fought bravely, but was defeated by the evil Baron.

Baron Inika used his powers to absorb Tohuna's power, which was extremely painful for the Toa.

In the end, Tohuna had become a Turaga.

He was forced to flee to an island that had a small Matoran population. He didn't act as their Turaga, but wandered around the island.

One day, Tohuna found bits of machinery and armor, and a plan formed in his mind...

With the materials, he constructed a robot suit for himself. It enhanced his powers, and looked like his Toa self.

Tohuna then left the island and searched the universe for his old enemy, in hopes of restoring his long gone power.

Okay, that was a weird storyline. But here is Tohuna in robot suit mode. If you look closely, you can see Turaga Tohuna's arms and feet.

Here he is in Toa mode. It isn't changed much, I just moved Turaga Tohuna's feet and arms(I added his weapons to his hands, and on the main body, I bent the legs in a certain way.

Well I agree this should be your self-moc,think of your username,but the toa and robot suit look very weird(too lanky in my opinion.) I also think he should have the uncanny urge to say cheesy jokes instead of controling "chease" because that's kinda weird…the black is a little strange too…